Acoach has found that his team wins about 4/5 of their home games.

to be in the playoffs, the team must win 3 or more of its next 4 home games. to estimate the probability of this happening, the coach uses a computer to randomly select 4 numbers from 1 through 5. he lets 1 through 4 represent winning and 5 represent losing.

he repeats this for a total of 20 trials and records the results in the table below.

of their home games.

to be in the playoffs, the team must win 3 or more of its next 4 home games. to estimate the probability of this happening, the coach uses a computer to randomly select 4 numbers from 1 through 5. he lets 1 through 4 represent winning and 5 represent losing.

he repeats this for a total of 20 trials and records the results in the table below.

what is the best estimate, based on this simulation, of the probability the team will win 3 or more of their next 4 home games?

(a) 5%

(b) 35%

(c) 65%

(d) 95%

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?